Untangling Tessa follows the story of Tessa Alderson, a 20-year old Library Science major with an abundance of anxiety. She lives with her older, beautiful, and popular sister, Annabeth Alderson, who also happened to star in a wildly popular indie film that only came out in the Midwest. Hopelessly in love with her adorkable garbage man, Tessa leads a pretty boring life full of books and lonely nights …until, that is, she discovers an unwanted visitor living under her bed. And, unsurprisingly, her whole life turns upside down.